YB1520ST25 YOBON [YOBON TECHNOLOGIES,INC.], YB1520ST25 Datasheet - Page 3

• Manufacturer Part Number: YB1520ST25
• Description: High Power Step-up DC-DC Converter, White LED Driver
• Manufacturer: YOBON [YOBON TECHNOLOGIES,INC.]

(TA=25°C, Vin=3.3V, Cin=1uF Cout=10uF unless otherwise noted)
Absolute Maximum Ratings
Vin..........................................................................20V
SW Voltage ............................................................36V
FB Voltage ...............................................................5V
CTRL Voltage...........................................................5V
Maximum Junction Temp, TJ (not 2)...................150°C
Lead Temperature (Soldering 10 sec) ................300°C
Thermal Resistance............................................195°C
Electricity Characteristics
YB1520 MRev.1.2
Note:
Absolute maximum ratings are limits beyond which damage to the device may occur. The maximum allowable power dissipation is a
function of maximum function temperature, TJ(max), the junction to ambient thermal resistance, θJA , and the ambient temperature.
The maximum allowable, power dissipation at any ambient temperature is calculated using: PD(MAX)= [TJ(max)-TA]/θJA . Exceeding
the maximum allowable power dissipation will cause excessive die temperature. All limits at temperature extremes are guaranteed via
correlation using standard statistical methods
(Quiescent
Symbol
Current)
FRSW
DTMN
DTMX
OVP
VFB
VSAT
VCTL
θJA
ILKG
ICL
ICTL
Vin
ILIM
IQ
IB
Input Voltage Range
Not Switching
Shutdown
Feedback Voltage
Switch Current Limit
FB Pin Bias Current
Switching Frequency
Maximum Duty Cycle
Minimum Duty Cycle
Switch Vcesat
Switch Leakage Current
VCTRL for Full LED
Current
CTRL Pin Bias Current
Over Voltage Protection
Thermal Resistance
Function Parameter
High Power Step-up DC-DC Converter, White LED Driver
www.yobon.com.tw
Vfb = 0.3V
CTRL = 0V
Iout=20mA,Vout=12.5V
Circuit of Figure 1
100% Duty Cycle
40% Duty Cycle
Vfb=200mV
At Isw = 200mA
Ctrl = 0.3V
Full On
Full Off
Ctrl = 2V
Test Conditions
Recommended Operating Conditions
Operating Temperature (note 3) ................ –40°C~85°C
Supply Voltage............................................. 2.5V~16V
SW Voltage ............................................................30V
180
850
2.7
1.2
Min
680
2
20
200
900
600
700
120
220
1.5
0.3
1.7
0.2
Typ
10
20
34
1
YB1520
220
950
Max
1.7
16
20
720
1.8
0.3
1
85
25
°C/W
Units
mV
mA
mA
KHz
uA
uA
mA
mV
3
V
μA
μA
V
%
%
V
V